"If I think about the overall banks in total, there might not be too much growth on the topline," Graseck said.

"But when you think about the lead players taking share from weaker institutions, weaker rivals that have less product diversity, I do think you'll see...the large-cap banks take share and grow topline," she said.

Graseck's top two recommendations in the sector are Bank of America and JPMorgan , which she would put new money into even before they report earnings next week, she said.

She's placed a $30 price target on BofA over the next 12 months, and a $60 target on JPMorgan — the bank she said is likely to be the first to reinstate its dividend.